Promark Jim Wunderlich JW1 "System Blue" Soft Marimba Mallet The JW1 is a great choice for a low-range marimba mallet in a graduated set OR for an individual ensemble player Length: 16 5/8" Head Size: 1.9 x 2.15" The JW1 features a rubber-like synthetic core wrapped tightly with durable synthetic yarn on a lacquered birch shaft for a smooth finish with maximum strength Durable enough for outdoor environments, but the lush tone of these mallets is an appropriate and tasteful choice for indoor concert or marching settings All Promark drumsticks are designed and manufactured in the USA